Yeah, it didn't fix the door opening problem. And it also didn't fix the "nervous teenager driving in traffic for the first time" problem either.
I drove 100 miles on 12.5.4.2 HW3 today and noticed subtle changes in both freeway and city driving.
These observations are subjective, so take them with a grain of salt.
It did two amazing things:
1. As a fast moving car approached my rear and traffic slowed, it sped up and moved to the adjacent lane, cutting off the other car and possibly saving me from a rear-end collision. I didn’t touch the wheel, brakes, or accelerator.
2. While at a red light, my on-ramp was just 0.1 miles ahead, and I was on the far left lane. I thought I’d have to disengage FSD, speed off to cross three lanes, or slow down and wait my turn. But like it read my mind, it sped off, crossed three lanes, and made a smooth move onto the on-ramp.
I also felt a slightly smoother ride, though there were still some micro-stuttering of the speed.